78 ON UDORA OCCIDENTALIS 



Rhytiglossa radicosa, N. ab E. p. 344 = Rostellularia sarmentosa, N. ab E. p. 370.* 



. n r Leptostackya Martiana> N. ab E. 



Rhytiglossa Havanensis. N. ab E. p. 344 I I 00 , . , ,. ,. . 



9 7 . l > = < p. 381, a species scarcely distinct 



Rhytiglossa acuminata. N. ab E. p. 354 I I £ ,, r . . 



99 r J u trom the common L. comata.j 



Sericographis squarrosa, N. ab E. p. 364< = Beloperone Amherstice, N. ab E. p. 419. 



Leptostackya Zeylanica, N. ab E. p. 379 = Jdhatoda Hookeriana, N. ab E. p. 403. 



Adkatoda dipteracantha, N. ab E. p. %9§=Monechma pilosella, N. ab E. p. 412. 



Dicliptera clinopodia, N. ab E. p. 483 = Hypo est es clinopodia, N. ab E. p. 508. 



There is moreover the greatest confusion among the specimens 

 marked by him Strobilanthes scabra and Ruellia aspera, which are surely 

 all congeners. 



So also the names of Phlogacanthus asperulus, guttatus y and thyrsi- 



ft 



florus, Thyrsacanthus Indicus, and Loxanthus Gomezii, are repeatedly 

 interchanged and intermixed. There appear to be amongst them three 

 distinct species, but all evidently congeners. 



The two species of Leucorhaphis have already been shown by Sir W. 

 Hooker to be identical with Belantliera. 



Numerous other notes that Dr. Hooker and myself have taken in 

 the course of our examinations relate chiefly to the identity or confu- 

 sion of species ; the above are selected as the most striking that occurred 

 to us relating to the demarcation of genera. 



On Udora occidentalis, Koch (Hydrilla verticillata, Caspary), and Ser- 

 picula occidentalis, Pursh (Anacharis Ahinastrum, Bab.); by Dr. 

 Robert Caspary, of Bonn. 



{Translated from the 'Botanische Zeitung* of December 19, 1856.) 



The other day I received from Professor Al. Braun a specimen of 



Germau 



Selmentsee 



two feet of water, in company with Chara ceratophylla and C.jubata. 



* Tbese are, of course, not identical specimens, being from different countries, but 

 there appears no doubt as to their specific identity. 



f Professor Nees enumerates seventeen species under Leptostackya, 



gis inflorescentia et habitu quam characteribus strictis definitum." Two of these 

 subsequently referred by himself to Rhaphidospora, one is repeated under Adkatoda, 

 four have the habit and inflorescence of Rhytiglossa pectoralis, and the commonest 

 of these four is twice repeated in Rhytiglossa, five more which I have seen appear to 

 mo. to have in these rcsnects no common resemblance to Z. tomato, nr Ma*tinMJt. 



""—ma 



known to ii ic 



genera 



/ 



